Real time satellite tracking for: INMARSAT 3-F1Ģ5E Alphasat (Inmarsat 4A-F4). Weegy: Natural law or the law of nature is a theory that posits the existence of a law whose content is set by nature and that therefore has validity everywhere. These links will plot in real time where each of the four satellites are in relation to the arc, the exact value is given by its latitude.Ħ4.5E Inmarsat 3-F1. Once each satellite moves more than about 1° above or below the arc the signals will start to decrease so ideally the dish should be re-adjusted to match the change in elevation. Unlike regular TV satellites Inmarsats are on inclined orbits which means they drift above and below their correct position in the Clarke Belt in a figure of eight movement. I sometimes track flights into John Wayne Airport-Orange County on, while simultaneously listening to JWA traffic on.
Another plugin called Aux VFO allows me to monitor multiple channels using virtual audio cable software and multiple instances of Jaero. I find it convenient to set all the T channels into memories using the frequency manager plugin for SDR Sharp. After contacting COAA and verifying that this is not duplicated in their system, I was advised by FA Online Chat to post to this board.
When I attempt to register on the ADSB site, I receive a message that the code assigned to me by COAA is already registered. It is worth experimenting with this as many LNBs will have superior performance on one polarity.Īs you move further away from due south circular polarity becomes less defined at least on both my systems and both polarities should be tried to ensure you're on the correct one. I am running Planeplotter and sharing data the Flightaware. Note that rotating the depolarising plate in the LNB throat by 90° and switching the receiver to vertical will also give reception of LHCP. On my system which is set correctly for broadcast TV best results are obtained with left hand circular polarisation, this corresponds to the receiver being set to horizontal polarity. I've listed the downconverted IF frequencies used to tune SDR Sharp, for the actual C-Band frequency subtract the given frequency from 5.150.000.000įrequencies are liable to change a few kHz depending on external temperature effects on the LNB and receiver.
The ones of interest to Aero monitoring are marked as T channels, the others carry plenty of Aero traffic but no positioning reports. The four question marked frequencies on 25E are too weak for good decoding on my dish. These are the four satellites I can see and all the channels I can decode on my 1.8M Prime Focus using a Titanium C1W LNB. I posted this to the PP group, it's aimed at users familiar with PP and air comms but not so experienced with satellite stuff, especially circular polarity on C-Band.